Solvent-Based (Polychloroprene)

Many of the same tackifiers used for hot melt and waterborne applications are usable in solvent systems. The only limitation is that they must dissolve to form a stable solution at low enough viscosity to allow application. The common types of solventborne adhesives are pressure sensitive (used mainly for tapes and labels), non-pressure sensitive (applications such as mastics and sealants), and contact adhesive (used for footwear and construction assembly). Solventborne pressure sensitive adhesives are normally based on styrenic block copolymers, natural rubber, styrene-butadiene rubber (SBR), and acrylic polymers. Sealants and mastics are frequently based on SBR or butyl rubber. Contact adhesives are most commonly based on polychloroprene rubber.